(19)

(11)

EP 0 988 422 A1

(12)

(43) Date of publication: 29.03.2000 Bulletin 2000/13 (21) Application number: 98925366.1 (22) Date of filing: 09.06.1998

(51) International Patent Classification (IPC)7: E01C 13/08 (86) International application number: PCT/CA9800/558 (87) International publication number: WO 9856/992 (17.12.1998 Gazette 1998/50)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 09.06.1997 CA 2206106 (71) Applicant: 2752-3273 Quebec Inc. Montreal, Quebec H3B 4W5 (CA)	(72) Inventor: LEMIEUX, Alain Sherbrooke, Quebec J1K 2P2 (CA) (74) Representative: Price, Nigel John King  J.A. KEMP & CO.14 South SquareGray's Inn London WC1R 5LX London WC1R 5LX (GB)